Islajtd



(No Model.) n

C. P. WNSLOW.

PLIBRS. No. 289,052. vlaented Nov. 27, i883.

, v Fl'e- 6- WITNESSES n I INVENTOR.

Arent tries.

CHARLES F. WINSLO'V, OF PAWTUCKET, RHDE ISLAND.

PLIERS.

SPECIFICATION forming part of Letters Patent No. 289,052, dated November 2'7, 1883.

Application tiled May 26,1883. (No model.)

.To all whom t may concern,.- s

Be it known that I, CHARLES F. Vi'NsLoW, of Pawtucket, Providence county, Rhode Island, have invented certain new and useful Improvements in Pliers and Nippers, of which the following is a specieation, reference being had to the drawings accompanying the saine, making part hereof.

The object of this invention is to furnish pliers and nippers of such construction that their holding-j aWs shall remain constantly parallel, although opened and closed by crossing pivoted levers. To accomplish this object I make one jaw integral with one of the levers, slot, or groove, the stock adjacent to said jaw to receive the shortened transverse shank of the other jaw, which shank has a straight rack upon it engaging with a segmentgear formed on the end of the other lever, with the connecting-pivot as a center. This latter lever is shorter than the other one by as much as the length of its jaw and the breadth of the transverse shank. This shank is shaped in erosssection to tit the groove or slot through the stoel; of the other jaw, so as to provide for a free movement and yet hold the jaws parallel.

The dra-Wings show in Figure l a plan view of my improved pliers, the dottedlines denot ing the position when spread, and showing the parallelism of the holding-jaws. Fig. 2

is an edge View. Figs. 3 and 4 shoviT the longer lever in planand edge view, While Figs. 5 and 6 are similar views of the shorter lever; and Figs. 7 and 8 are similar representations of the detached jaw and its transverse shank, Worked by the terminal segment-gear on the shorter lever.

A is the longer lever, and B the shorter one, united by the pivot C. The lever A is slotted (as at a., Fig. 4) from the base of the holdingjaw A to and beyond the pivot C, in order to receive and permit motion of the reduced part b of the shorter arm and the transverse shank d of the detached jaw D. The lever A, slotted stock or body, and jaw A are continuous or integral. The part Z1 of the lever B terminates in a segment-gear, g, which engages with the teeth of a straight rack, h., formed on the edge of the transverse shank d, and hence the movement of the levers A and B on their pivot C causes' the jaw D to inove toward and from the jaw A. This movement is in alight line, since the shank d is gro'oved lengthwise to tit corresponding ribs Within the recess or slot a.

I am aware that in various tools-such as vises,\v1enehes, and the likea parallel movenient has been attained by various means; hence I do not claim such movements, broadly, nor as applied to tools generally; but

lhat I claim as my invention in pliers and nippers, and desire to secure by Letters Patent, is-

Ihe improved pliers or nippers herein described, consisting ot' the jaw A and lever A, formed integral and slotted at a, in combination with the lever B b, pivoted thereto at C, the part b terminatingin a segment-gear working in the slot a in engagement with a rack on the edge ofthe grooved transverse shank d of 7o the jaw D, substantially as and for the purpose set forth.

CHAS. FREDERIC VINSLOVV.

Witnesses:

O. A. Etrnnson, HERBERT G. ALLEN. 

